Today's scheduled [ http://aa.usno.navy.mil/data/docs/ EarthSeasons.html ] geocentric astronomical event is the Solstice [ http://kids.msfc.nasa.gov/news/2001/ news-summer.asp ], with the Sun reaching its northernmost declination [ http://csep10.phys.utk.edu/astr161/lect/time/ coordinates.html ] at 13 hours 24 minutes Universal Time [ http://aa.usno.navy.mil/faq/docs/UT.html ]. For denizens of planet Earth this Solstice [ http://antwrp.gsfc.nasa.gov/apod/ap000621.html ] marks the beginning of Summer in the northern [ http://solar.physics.montana.edu/YPOP/Classroom/ Lessons/Sundials/sundials.html ] hemisphere and Winter in the south [ http://solar.physics.montana.edu/YPOP/Classroom/Lessons/ Sundials/sundials_S.html ]. Of course, the tilt [ http://www.wrh.noaa.gov/Flagstaff/science/seasons.htm ] of the Earth's axis of rotation (and not [ http://www.badastronomy.com/bad/misc/seasons.html ] a change in the Earth-Sun distance) is mainly responsible for the changing seasons and the Sun's yearly north-south motion through the sky. Following the rising [ http://pages.prodigy.net/pam.orman/joesun/ Sun_05.html ] and setting points of the Sun along the horizon is one way to track [ http://analyzer.depaul.edu/paperplate/ Sunrise%20Sunset.htm ] the Sun's progress along its seasonal cycle [ http://www.thursdaysclassroom.com/23sep99/ story5.html ]. Tall grasses and tinted clouds frame this dramatic view of the setting Sun approaching the northern limit of this year's seasonal journey as seen near Raffingora, Zimbabwe [ http://www.cia.gov/cia/publications/factbook/geos/ zi.html ].